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Re: [MW:31755] Facing crack in during overlay welding of Stellite 12 on Duplex material

By Materials & Welding
Dear Suresh

Are you getting the crack during the deposition? Or after the job is cooled?

Srinivasan

On Fri, Nov 20, 2020 at 3:16 PM SURESH <qms.pjgpl@gmail.com> wrote:
Dear Experts
During welding of Duplex grade material we are facing crack on the weld metal as attached in the photo. Below is the detailed process for reference

Process: PTAW
Base Material: ASTM 182 Gr.F55
Consumable: Stellite 12 (Powder)
PreHeat: Nil
Interpass: <200*C
Current: 128 to 145
Gas: Ultra Pure ARGON
Job Size: OD544 X ID 472 X Thk 36mm
Welding: Overlay weld on OD Surface alone


We are welding deposition thickness of 3mm. So as per this we are doing welding of 2 layer with multi pass, On welding second layer we found crack. Can anyone suggest where it is went wrong and why this crack is propagated. Please advice

 

In First layer- Total of 12 weld pass

In second layer- Total of 12 weld pass



Regards

Suresh

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